Network
AS35228 o2 (Telefonica UK)
- Autonomous system number
- AS35228
- Registered in
- GB
- Registry
- RIPE
- ASN registered
- 2005-06-28
- IPv4 prefixes announced
- 113
- IPv6 prefixes announced
- 26
- Internet exchanges
- 2
- Data centres
- 2
- Internet users (estimate)
- ~1,110,555
Prefix counts from the global routing table as of 2026-10-04. Exchange and data-centre counts are what the network lists in PeeringDB. User estimate by APNIC Labs, 2026-09-30. Website: www.o2.co.uk/abouto2/company-details
Upstreams and peers, traceroute paths through it, where it hands off to its transit providers, routing history and alerts - free with an account, and queryable from Claude, ChatGPT and other AI agents through the BGPScout MCP server.
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